高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (11): 20230326.doi: 10.7503/cjcu20230326

• 有机化学 • 上一篇    

三苯胺基取代的吡啶基二氟化硼配合物力致荧光变色及无墨书写测试

王甫鹏, 田佳壮, 杨艳华(), 高树林()   

  1. 昆明学院化学化工学院, 云南省金属有机分子材料与器件重点实验室(筹), 昆明 650214
  • 收稿日期:2023-07-14 出版日期:2023-11-10 发布日期:2023-08-08
  • 通讯作者: 杨艳华 E-mail:yh_yangkmu@126.com;778144294@qq.com
  • 作者简介:高树林, 男, 博士, 副教授, 主要从事理论计算方面的研究. E-mail: 778144294@qq.com
    第一联系人:共同第一作者.
  • 基金资助:
    云南省科技厅基础研究专项青年项目(202101AU070060);昆明学院引进人才科研项目(YJL2008)

Mechanofluorochromic and Inkless Writing Test of Pyridine-based Difluoroboron Complex with Triphenylamine Moiety

WANG Fupeng, TIAN Jiazhuang, YANG Yanhua(), GAO Shulin()   

  1. Yunnan Key Laboratory of Metal?Organic Molecular Materials and Device,School of Chemistry and Chemical Engineering,Kunming University,Kunming 650214,China
  • Received:2023-07-14 Online:2023-11-10 Published:2023-08-08
  • Contact: YANG Yanhua E-mail:yh_yangkmu@126.com;778144294@qq.com
  • Supported by:
    the Basic Research Programs of Yunnan Science and Technology Department, China(202101AU070060);the Research Foundation for Introduced Talents of Kunming University, China(YJL2008)

摘要:

为了探究二氟化硼配合物的光学性能及实际应用, 设计合成了一种以三苯胺为电子供体、 二氟化硼为电子受体的D-π-A型二氟化硼配合物4′-(1,1-二氟-1H-1λ4, 9λ4-吡啶[1,2-c][1,3,5,2]氧二氮杂硼啉-3-基)-N,N-二苯基-[1,1′-联苯基]-4-胺(Py-TPA BF2). 光学性能测试结果表明, 该配合物具有分子内电荷转移特性和聚集诱导发光活性. 进一步的研究结果表明, 在外力刺激下, 配合物Py-TPA BF2的固体荧光发射光谱从530 nm红移至550 nm, 发光颜色由绿色转变为稻草黄色, 且在二氯甲烷蒸气熏蒸后颜色恢复至绿色. X射线衍射测试结果表明, 研磨和溶剂熏蒸过程可使配合物固体有序的晶相与无序的非晶相之间的相变转换, 导致配合物Py-TPA BF2具有可逆的力致荧光变色性能. 此外, 该配合物还可应用于无墨书写的数据安全保护, 这将有助于智能发光材料的合理设计.

关键词: 二氟化硼配合物, 力致荧光变色性能, 数据安全保护

Abstract:

In order to explore the photophysical property and practical application of difluoroboron complex, a D-π-A type difluoroboron complex 4'-(1,1-difluoro-1H-1λ4,9λ4-pyrido[1,2-c][1,3,5,2] oxadiazaborinin-3-yl)- NN-diphenyl-[1,1'-biphenyl]-4-amine(Py-TPA BF2) containing triphenylamine as electron donor and difluoroboron as electron acceptor was designed and synthesized. The photophysical testing results indicated that the complex exhibited intramolecular charge transfer characteristic and aggregation-induced emission activity. Further studies showed that the fluorescence emission spectrum of the complex Py-TPA BF2 in solid state was red-shift from 530 nm to 550 nm under external stimulation, and the luminescence color changed from green to straw-yellow, and the color again returned to green after using dichloromethane vapor fuming. The X-ray diffraction testing results indicated that the phase transformation between the ordered crystalline phase and the disordered amorphous phase during grinding-fuming processes resulted in the reversible mechanofluorochromic performance of complex Py-TPA BF2. Furthermore, it could also be applied to data security protection for inkless writing, which would be conducive to the rational design of intelligent luminescent materials.

Key words: Difluoroboron complex, Mechanofluorochromic, Data security protection

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